[Bug] Mailer_1_0 not working

[SOCOST]

Describe the bug
Last version of the responder "Mailer" is showing error "description is missing", although the parameter is filled.

To Reproduce
Steps to reproduce the behavior:

1. Create a case and run the responder "Mailer_1_0"

Expected behavior
Send an email to the mail account especified in the tag "mail:"

Complementary information
This is the report from Cortex:
"errorMessage": "description is missing",
"input": "{"data":{"severity":2,"owner":"tecnico01","_routing":"AXPXbxuYQ0lZu2cicNpz","flag":false,"updatedBy":"carloss","customFields":{},"_type":"case","description":"Test","title":"Test Mailer","tags":["Test","mail: XXXXX"],"createdAt":1597047249654,"_parent":null,"createdBy":"carloss","caseId":27,"tlp":2,"metrics":{},"_id":"AXPXbxuYQ0lZu2cicNpz","id":"AXPXbxuYQ0lZu2cicNpz","_version":2,"pap":2,"startDate":1597046520000,"updatedAt":1597047259138,"status":"Open"},"dataType":"thehive:case","tlp":2,"message":"","parameters":{"user":"carloss"},"config":{"proxy_https":null,"cacerts":null,"smtp_pwd":"XXXXX","check_tlp":true,"max_tlp":2,"smtp_host":"smtp.office365.com","check_pap":true,"max_pap":2,"smtp_port":587,"jobTimeout":30,"smtp_user":"XXXXX","proxy_http":null,"from":"XXXXX"},"pap":2}",
"success": false

Work environment

• Client OS: Windows 10 v1909
• Server OS: Ubuntu 20.04 LTS
• Browse type and version: Chrome Versión 84.0.4147.105 (Build oficial) (64 bits)
• Cortex version: 3.0.1-1
• Cortex Analyzer/Responder name: Mailer 1.0
• Cortex Analyzer/Responder version: 1.0

Thank you

[garanews]

fixed in 2.9.0

[priamai]

Please re-open I am with Cortex 3.1.1-1 and same exact bug but for alerts.
Checking the code:

        elif self.data_type == "thehive:alert":
            description = self.get_param(
                "data.case.description", None, "description is missing"
            )

and my debug log suggests that for alerts it should be instead:

        elif self.data_type == "thehive:alert":
            description = self.get_param(
                "data.description", None, "description is missing"
            )

Please let me know if you need more info.